<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <title>热力图</title>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/hmap-js/dist/hmap.css">
  <style>
    html, body, #map {
      height: 100%;
      padding: 0;
      margin: 0;
    }
    .hmap-control-zoom {
      right: 30px;
    }
  </style>
</head>
<body>
<div id="map"></div>
<script src="https://cdn.jsdelivr.net/npm/hmap-js/dist/hmap.js"></script>
<script src="https://cdn.jsdelivr.net/npm/echarts/dist/echarts.js"></script>
<script src="../ajax.js"></script>
<script src="https://cdn.jsdelivr.net/npm/ol3-echarts/dist/ol3Echarts.js"></script>
<!--<script src="../../../dist/ol3Echarts.js"></script>-->
<script>
  var map = new HMap('map', {
    controls: {
      loading: true,
      zoomSlider: true,
      fullScreen: false
    },
    view: {
      center: [11464017.313439976, 3934744.6720247352],
      extent: [-2.0037507067161843E7, -3.0240971958386254E7, 2.0037507067161843E7, 3.0240971958386205E7],
      projection: 'EPSG:102100',
      tileSize: 256,
      zoom: 5, // resolution
    },
    baseLayers: [
      {
        layerName: 'vector',
        isDefault: true,
        layerType: 'TileXYZ',
        tileGrid: {
          tileSize: 256,
          extent: [-2.0037507067161843E7, -3.0240971958386254E7, 2.0037507067161843E7, 3.0240971958386205E7],
          origin: [-2.0037508342787E7, 2.0037508342787E7],
          resolutions: [
            156543.03392800014,
            78271.51696399994,
            39135.75848200009,
            19567.87924099992,
            9783.93962049996,
            4891.96981024998,
            2445.98490512499,
            1222.992452562495,
            611.4962262813797,
            305.74811314055756,
            152.87405657041106,
            76.43702828507324,
            38.21851414253662,
            19.10925707126831,
            9.554628535634155,
            4.77731426794937,
            2.388657133974685
          ]
        },
        layerUrl: 'http://cache1.arcgisonline.cn/arcgis/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}'
      }
    ]
  });

  getJSON('../../json/heatmap.json', function (response) {
    var convertData = function (data) {
      var res = [];
      for (var i = 0; i < data.length; i++) {
        var geoCoord = response['coordinates'][data[i].name];
        if (geoCoord) {
          res.push(geoCoord.concat(data[i].value));
        }
      }
      return res;
    };
    var option = {
      title: {
        text: '全国主要城市空气质量',
        subtext: 'data from PM25.in',
        sublink: 'http://www.pm25.in',
        left: 'center',
        textStyle: {
          color: '#fff'
        }
      },
      backgroundColor: 'transparent',
      visualMap: {
        min: 0,
        max: 500,
        splitNumber: 5,
        inRange: {
          color: ['#d94e5d','#eac736','#50a3ba'].reverse()
        },
        textStyle: {
          color: '#fff'
        }
      },
      series: [{
        name: 'AQI',
        type: 'heatmap',
        data: convertData(response.attr)
      }]
    };
    var echartslayer = new ol3Echarts(option, {
      hideOnMoving: true,
      hideOnZooming: true
    });
    echartslayer.appendTo(map.getMap());
  });
</script>
</body>
</html>
